Deconz - all devices being switched on together

Apologies in advance as I am not sure what information might be useful to include, however I have recently started to experience an odd issue whereby all devices linked to Deconz suddenly collectively turn on. On one occasion all the associated colour change light bulbs also switched red. I am unsure as to whether this is an error or something more concerning from a security perspective.

When I look at a device in HA it will report that the device was ‘turned on’ but give no further details, unlike if a user (or automation) interacted with it - eg “Steve”.

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My HA is available for remote access via DuckDNS / NGINX. Zigbee devices are connected via a Conbee II stick and Deconz running firmware 26580700.

At that time there was no intervention by anyone who should have access and no automatons I am aware of should be running which do this. Home-assistant.log contains no info on the event. The Deconz log at that particular moment reports:

09:32:32:140 Current channel 15,
09:32:32:906 delayed group sending,
09:32:32:983 delayed group sending,
09:32:32:148 Device TTL 6419 s flags: 0x7,
09:32:32:893 delayed group sending,
09:32:32:867 ZCL attribute report 0x000D6FFFFE60BBA4 for cluster: 0x0006, ep: 0x01, frame control: 0x08, mfcode: 0x0000 ,
09:32:32:906 Replace task 656373 type 14 in queue cluster 0x0006 with newer task 656376 of same type. 1 runnig tasks,
09:32:33:139 delayed group sending,
09:32:33:139 Replace task 656398 type 14 in queue cluster 0x0006 with newer task 656401 of same type. 4 runnig tasks,
09:32:33:105 ZCL attribute report 0x086BD7FFFE00F9DA for cluster: 0x0006, ep: 0x01, frame control: 0x08, mfcode: 0x0000 ,
09:32:33:049 Replace task 656387 type 14 in queue cluster 0x0006 with newer task 656389 of same type. 2 runnig tasks,
09:32:33:036 delayed group sending,
09:32:33:095 delayed group sending,
09:32:33:113 Replace task 656393 type 14 in queue cluster 0x0006 with newer task 656396 of same type. 3 runnig tasks,
09:32:33:126 delayed group sending,
09:32:32:959 delayed group sending,
09:32:32:971 Replace task 656378 type 14 in queue cluster 0x0006 with newer task 656380 of same type. 2 runnig tasks,
09:32:32:971 delayed group sending,
09:32:32:983 Replace task 656380 type 14 in queue cluster 0x0006 with newer task 656384 of same type. 2 runnig tasks,
09:32:33:190 0x0000000000000000 error APSDE-DATA.confirm: 0xD2 on task,
09:32:33:205 Replace task 656405 type 14 in queue cluster 0x0006 with newer task 656407 of same type. 3 runnig tasks,
09:32:33:192 delayed group sending,
09:32:33:205 delayed group sending,
09:32:33:218 Replace task 656407 type 14 in queue cluster 0x0006 with newer task 656409 of same type. 3 runnig tasks,
09:32:33:218 delayed group sending,
09:32:33:284 delayed group sending,
09:32:33:226 delayed group sending,
09:32:33:225 delayed group sending,
09:32:33:271 Replace task 656409 type 14 in queue cluster 0x0006 with newer task 656412 of same type. 2 runnig tasks,
09:32:33:525 delayed group sending,
09:32:33:520 delayed group sending,
09:32:33:516 0x0000000000000000 error APSDE-DATA.confirm: 0xD2 on task,
09:32:33:507 Replace task 656429 type 14 in queue cluster 0x0006 with newer task 656432 of same type. 0 runnig tasks,
09:32:33:454 delayed group sending,
09:32:33:452 0x0000000000000000 error APSDE-DATA.confirm: 0xD2 on task,
09:32:33:441 Replace task 656425 type 14 in queue cluster 0x0006 with newer task 656427 of same type. 0 runnig tasks,
09:32:33:429 delayed group sending,
09:32:33:408 0x0000000000000000 error APSDE-DATA.confirm: 0xD2 on task,
09:32:33:376 delayed group sending,
09:32:33:376 Replace task 656420 type 14 in queue cluster 0x0006 with newer task 656423 of same type. 1 runnig tasks,
09:32:33:287 delayed group sending,
09:32:33:292 0x0000000000000000 error APSDE-DATA.confirm: 0xD2 on task,
09:32:33:292 delayed group sending,
09:32:33:297 Replace task 656414 type 14 in queue cluster 0x0006 with newer task 656416 of same type. 1 runnig tasks,
09:32:33:297 delayed group sending,
09:32:33:348 0x0000000000000000 error APSDE-DATA.confirm: 0xD2 on task,
09:32:33:351 delayed group sending,
09:32:33:364 Replace task 656418 type 14 in queue cluster 0x0006 with newer task 656420 of same type. 1 runnig tasks,
09:32:33:364 delayed group sending,
09:32:33:533 Replace task 656434 type 14 in queue cluster 0x0006 with newer task 656436 of same type. 0 runnig tasks,
09:32:33:533 delayed group sending,
09:32:33:581 Replace task 656436 type 14 in queue cluster 0x0006 with newer task 656438 of same type. 0 runnig tasks,
09:32:33:588 0x0000000000000000 error APSDE-DATA.confirm: 0xD2 on task

Does anyone have any thoughts? If other info is needed please let me know.